Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6425390 | Unvented heating appliance having system for reducing undesirable combustion products | Larry E. Campbell, Sydney Barkhouse | 2002-07-30 |
| 6216687 | Unvented heating appliance having system for reducing undesirable combustion products | Larry E. Campbell, Sydney Barkhouse | 2001-04-17 |
| 5983890 | Fireplace having multi-zone heating control | Martin Alexander Thomas, Sydney Barkhouse, John Charles Kenzie Overall, Dick D. Gepilano, James Karl Georgieff | 1999-11-16 |
| 5958787 | Polymer sensor | Axel Schonfeld, Gernot Feucht, Andreas Schleicher, Georg Frank | 1999-09-28 |
| 5313932 | Hood for fireplace | Colin Adamson | 1994-05-24 |
| 4924850 | Method and adaptor for installing flue liner to a fireplace insert | — | 1990-05-15 |
| 4909227 | Direct top venting high efficiency fireplace | — | 1990-03-20 |
| 4862993 | Fireplace flue ambient noise reducing device | — | 1989-09-05 |
| 4838240 | Fireplace gas burner assembly | — | 1989-06-13 |
| 4838241 | Fireplace natural gas and propane burner assembly | — | 1989-06-13 |